| Phylogeny of Ptychostomum （Bryaceae,Musci） inferred from sequences of nuclear ribosomal DNA internal transcribed spacer （ITS） and chloroplast rps4 |
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| 作者姓名： | Chen-Ying WANG ;Jian-Cheng ZHAO |
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| 作者单位： | Chen-Ying WANG(College of Life Science, Hebei Normal University, Shijiazhuang 050016, China;Department of Life Science, Zhengzhou Teachers College, Zhengzhou 450044, China);Jian-Cheng ZHAO(College of Life Science, Hebei Normal University, Shijiazhuang 050016, China) |
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| 基金项目： | This research was supported by the National Natural Science Foundation of China，the National Infrastructure of Natural Resources for Science and Technology，the Natural Science Foundation of Hebei Province |
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| 摘 要： | The phylogeny of Ptychostomum was first spacer （ITS） region of the nuclear ribosomal （nr） DNA DNA rps4 sequences. Maximum parsimony, maximum undertaken based on analysis of the internal transcribed and by combining data from nrDNA ITS and chloroplast likelihood, and Bayesian analyses all support the conclusion that the reinstated genus Ptychostomum is not monophyletic. Ptychostomum funkii （Schwagr.） J. R. Spence （≡ Bryum funkii Schwaigr.） is placed within a clade containing the type species of Bryum, B. argenteum Hedw. The remaining members of Ptychostomum investigated in the present study constitute another well-supported clade. The results are congruent with previous molecular analyses. On the basis of phylogenetic evidence, we agree with transferring B. amblyodon Mull. Hal. （≡ B. inclinatum （Brid.） Turton≡ Bryum archangelicum Bruch ＆ Schimp.）, Bryum lonchocaulon Mull. Hal., Bryum pallescens Schleich. ex Schwaigr., and Bryum pallens Sw. to Ptychostomum.
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| 关 键 词： | 内转录间隔区 核糖体DNA DNA序列 系统发育 ITS 叶绿体 nrDNA 贝叶斯分析 |
Phylogeny of Ptychostomum (Bryaceae, Musci) inferred from sequences of nuclear ribosomal DNA internal transcribed spacer (ITS) and chloroplast rps4 |
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| Chen-Ying WANG,;Jian-Cheng ZHAO.Phylogeny of Ptychostomum (Bryaceae, Musci) inferred from sequences of nuclear ribosomal DNA internal transcribed spacer (ITS) and chloroplast rps4[J].Acta Phytotaxonomica Sinica,2009,47(4):311-320. |
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| Authors: | Chen-Ying WANG Jian-Cheng ZHAO |
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| Abstract: | The phylogeny of Ptychostomum was first undertaken based on analysis of the internal transcribed spacer (ITS) region of the nuclear ribosomal (nr) DNA and by combining data from nrDNA ITS and chloroplast DNA rps4 sequences. Maximum parsimony, maximum likelihood, and Bayesian analyses all support the conclu-sion that the reinstated genus Ptychostomum is not monophyletic. Ptychostomum funkii (Schwagr.) J. R. Spence (= Bryum funkii Schwagr.) is placed within a clade containing the type species of Bryum, B. argenteum Hedw. The remaining members of Ptychostomum investigated in the present study constitute another well-supported clade. The results are congruent with previous molecular analyses. On the basis of phylogenetic evidence, we agree with Bryum lonchocaulon Mull. Hal., Bryum pallescens Schleich. ex Schwagr., and Bryum pallens Sw. to Ptychostomum. |
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| Keywords: | Bryum molecular phylogeny nuclear ribosomal DNA internal transcribed spacer sequences Ptychostomum rps4 sequences |
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